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Finding the Fourth Proportional to 74,415.86, 111,366.35 and 45,941.12

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Solution

The fourth proportional to 74,415.86, 111,366.35 and 45,941.12 is: 68,752.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,415.86 : 111,366.35 = 45,941.12 : x
  2. Step 2: Convert to fraction form
    74,415.86/111,366.35 = 45,941.12/x
  3. Step 3: Cross multiply
    74,415.86x = 111,366.35 × 45,941.12
  4. Step 4: Simplify right side
    74,415.86x = 5,116,294,407.33
  5. Step 5: Solve for x
    x = 5,116,294,407.33/74,415.86
  6. Step 6: Final answer
    x = 68,752.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.